EASA SIB 2007-16
FAA SAIB NM-07-26 - Bombardier CL-600-2B19 "Regional Jet" aircraft - Incidents of Flap Failures on during Cold Weather Operations
Summary
FAA Special Airworthiness Information Bulletin NM-07-26 addresses flap failures on Bombardier CL-600-2B19 Regional Jet aircraft during cold weather operations. The bulletin highlights incidents where water ingress and freezing in flap system components have caused flap malfunctions, affecting flap extension and retraction. This information is supported by EASA Safety Information Notice 2007-16 and Bombardier All Operator's Message 1047.
What Changed
This bulletin introduces awareness of flap system reliability issues in cold weather for the Bombardier CL-600-2B19 aircraft and shares operational guidance to mitigate risks. It does not mandate any airworthiness directive but recommends operators review Bombardier's guidance and prepare for potential flap failures. Bombardier is conducting a detailed investigation and plans to issue further recommendations by late 2007.
Why It Matters
Flap failures during cold weather can impact fuel consumption, landing distance, obstacle clearance, and climb performance, posing safety risks. Operators, maintenance, and flight crews must understand these risks to adjust operational procedures and training accordingly. Awareness helps prevent incidents and ensures safer flight operations in cold environments.
What To Do
Operators should review and disseminate Bombardier All Operator's Message 1047 to maintenance and flight crews, emphasizing flap failure scenarios and performance considerations. Flight crews must be trained on decision-making related to flap malfunctions, especially in cold weather and when operating to remote or runway-limited airports. No immediate regulatory action is required, but ongoing monitoring and preparation for future recommendations are advised.
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